build(deps): bump send and express in /functions

Bumps [send](https://github.com/pillarjs/send) to 0.19.0 and updates ancestor dependency [express](https://github.com/expressjs/express). These dependencies need to be updated together.


Updates `send` from 0.18.0 to 0.19.0
- [Release notes](https://github.com/pillarjs/send/releases)
- [Changelog](https://github.com/pillarjs/send/blob/master/HISTORY.md)
- [Commits](pillarjs/send@0.18.0...0.19.0)

Updates `express` from 4.19.2 to 4.21.0
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.0/History.md)
- [Commits](expressjs/express@4.19.2...4.21.0)

---
updated-dependencies:
- dependency-name: send
  dependency-type: indirect
- dependency-name: express
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

functions/package-lock.json

@@ -16,7 +16,7 @@
     "@ecomplus/application-sdk": "^22.0.0-firestore.1.15.7",
     "@google-cloud/firestore": "^4.15.1",
     "axios": "^0.28.1",
-    "express": "^4.19.2",
+    "express": "^4.21.0",
     "firebase-admin": "^10.3.0",
     "firebase-functions": "^3.24.1",
     "qs": "^6.13.0"